Question about Goodman GMS80903BNA Heater

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Goodman GMP075-3 heater blinks continuously,

I've tried to reverse polarity - but nothing happens? Next steps?
Mark

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Most all of them furnaces trouble shooting sheets located with the wiring diagram . Count the number of time it blinks and look at it on the guide it will tell you whats wrong

Posted on Feb 13, 2009

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How do you reset the furnace when it indicates the polarity has been reversed


To reset any furnace just unplug and plug it back in. If the polarity has been reversed open up the small box the power cord goes to, you'll see white, black and green wires. find the ones that are attached directly to the power cord and switch the white with the black and vice versa.

Oct 02, 2011 | Goodman GMS90703BXA Heater

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Furnace problems


On - OK
1 Blink - Ignition failure. Check Gas flow, gas pressure, gas valve, flame sensor.
2 Blinks - Closed pressure switch. Check pressure switch (stuck in closed position).
3 Blinks - Pressure switch - failre to close. Check venter, pressure switch, vent blockage.
4 Blinks - Open limit switch. Main limit or aux limit are open. (My comment - Means overheating in chamber. Often result of blocked intake air. Bad filter. In my case, plastic wrap had been sucked into the intake. )
6 Blinks - False flame sensed. Check sticking gas valve.
Rapid continuous blinking - Incorrect twinning, incorrect primary polarity. Reverse transformer secondary leads, reverse primary wires.

Closed pressure switch can be from dirty combustion vents, bad chamber pressure - like missing screws, maladjusted gas pressure, failing pressure switch, loose hoses, moisture in the hoses or fan blades The switch need to be closed to ge the unit to work

Jan 23, 2008 | Goodman GMS90703BXA Heater

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Goodman heater "twinning" problem


Hi inhave been looking for solution for this cannot find one all i can find is web address for goodman www.goodmanfg.com see if this helps , all i can find is reversed polarity but cannot see this as the problem hope this helps

Feb 21, 2010 | Goodman GMS90703BXA Heater

1 Answer

I have a Goodman GMP075-3. Worked OK on A/C.


I come across this one a lot. You need to switch the wires at power cord.
  1. Pull power out
  2. follow the cord* back to the furnace
  3. Open the front door
  4. There should be a small metal box where the cord leads to inside the furnace
  5. Open that up
  6. Take the electrical tape off
  7. Pay attention to which wire goes where
  8. Switch the two wires around
If you still got problems ill walk you through it over the phone www.fastacservice.com

Oct 12, 2009 | Goodman Heaters

2 Answers

LED light blinking constantly


short in a/c wires on contactor is bad, disconnect wires at a/c and power up if no pop fuse it is the contactor. if still pops replace wire.

Apr 24, 2009 | Goodman GDS80703ANA Open Flame Mid-Size...

1 Answer

Goodman heater will not start have continuous blinking light replaced secondary transformer still no work and continusous blinking verified 120 volts to vent fan but vent fan not running vent fan ohms to...


I cant be sure but usually the constant blink on some boards means reversed polarity. Check your HOT (L1 - Black) comming in to the connector box and the your NUTURAL (L3 - White) should not read any volts to ground (not more than 12 volts on an electronic VOM). If this is opposite remove power and reverse black and white wires and retry.
HOPE THIS HELPS PLEASE GRADE ME ACCORDINGLY and GOOD LUCK!

Mar 03, 2009 | Goodman GMS90703BXA Heater

1 Answer

Led keep on flashing


What is the model #. Sounds like your polarity is reversed. Do you know how to check for this.

Nov 13, 2008 | Goodman GMS90703BXA Heater

1 Answer

6 blinks


sounds to me like i wish i could find out if this is new install or if the electric has been changed recently,,,sounds like reversed polarity on the plug,,,which means the white and black wires need to be swapped. If there has not been change recently than u need to see the other post i made on goodman about the combustion fan motors and there types and fixes. But almost certain that is reversed polarity. good luck

Oct 23, 2008 | Goodman GMS90703BXA Heater

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